Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Craig M. Beers0
Clarence J. Wytas0
Darryl A. Colson0
Date of Patent
May 2, 2017
Patent Application Number
13871267
Date Filed
April 26, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
A ram air fan inlet shroud for a ram air fan assembly is provided. The ram air fan inlet shroud includes a shroud portion extending outwardly from a conical portion. The conical portion provides a transition between a central portion and an inner ram air fan hub interface portion. The conical portion includes a plurality of inner cooling slots having a slot arc length and spaced apart by a slot spacing angle. A ratio of the slot spacing angle to the slot arc length is between about 1.24 and 1.4. The ram air fan inlet shroud also includes a recessed portion located between the inner ram air fan hub interface portion and an outer ram air fan hub interface portion. The recessed portion includes a plurality of outer cooling holes.
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